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Determine the concentration of the ion indicated in each solution.
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General Chemistry: Principles and Modern Applications (11th Edition)
- Calculate the solubility in grams per 100 mL of BaF2 in a 0.10 M BaCl2 solution.arrow_forwardWhen 85.0 mL of 0.250 M Ba(OH)2 solution is added to 85.00 mL of 0.250 M Al (NO3)3 solution, a white gelatinous precipitate of Al(OH)3; is formed. Assuming 100% yield, (a) what mass (in grams) of Al(OH)3 is formed? (b) what is the molarity of each of the ions Ba2+, OH-, Al3+, NO3- in the resulting solution?arrow_forwardWhat must the ratio of H2PO4 to HPO42 be to have a buffer with a pH value of 7.00?arrow_forward
- A volume of 50 mL of 1.8 M NH3 is mixed with an equal volume of a solution containing 0.95 g of MgCl2. What mass of NH4Cl must be added to the resulting solution to prevent the precipitation of Mg(OH)2?arrow_forwardThe Handbook of Chemistry and Physics (http://openstaxcollege.org/l/16Handbook) gives solubilities of the following compounds in grams per 100 mL of water. Because these compounds are only slightly soluble, assume that the volume does not change on dissolution and calculate the solubility product for each. (a) BaSiF6, 0.026 g/100 mL (contains SiF62- ions) (b) Ce(IO3)4, 1.5102 g/100 mL (c) Gd2(SO4)3, 3.98 g/100 mL (d) (NH4)2PtBr6, 0.59 g/100 mL (contains PtBr62- ions)arrow_forwardWhat must be the concentration of chromate ion in order to precipitate strontium chromate, SrCrO4, from a solution that is 0.0034 M Sr2+?arrow_forward
- Rust, which you can take to be Fe(OH)3, can be dissolved by treating it with oxalic acid. An acid-base reaction occurs, and a complex ion is formed. (a) Write a balanced equation for the reaction. (b) What volume of 0.10 M H2C2O4 would be required to remove a rust stain weighing 1.0 g?arrow_forwardThe text describes zinc hydroxide as an amphoteric hydroxide, so Zn(OH)2 is soluble in basic solution. What is the molar solubility of Zn(OH)2 in 1.00 M NaOH? What is the pH of the equilibrium solution?arrow_forwardCalculate the number of milliters of 0.755 M KOH required to precipitate as Fe(OH), all of the Fe3+ ions in 174 mL of 0.676 M Felz solution. mL KOHarrow_forward
- A pink solid has the formula CoCl3·5NH3·H2O. A solution of this solid is also pink in color and when titrated with silver nitrate quickly forms 3 mol of AgCl. Upon heating the pink solid, it loses 1 mole of water and forms a purple solid with the same NH3:Cl:Co ratio. Dissolving and titrating with AgNO3, the purple solid slowly releases one of its chlorides. a) Derive the formulas of the two octahedral complexes.b) draw and name them.c) write the chemical equations of all described reactions.arrow_forwardA 50.0 mL sample of 0.0152 M Na2SO4 (aq) is added to 50.0 mL 0.0125 M Ca(NO3)2 (aq). What percentage of the Ca2+ remains unprecipitated?arrow_forward(a) (b) The formation constant, Kf, of Ni(CN)2(aq) Ni²+ (aq) + 4 CN¯(aq) ⇒ Ni(CN)²(aq) is 2.1 x 10³¹. We dissolve 0.0444 mol of Ni(NO3)2 in 1.000 L of a 0.777 M solution of NaCN. Make the approximation that the volume remains fixed at 1.000 L. What will be the concentrations of Ni²+ (aq), CN- (aq), and Ni(CN)2(aq) at equilibrium? The temperature is 25.0 °C. For the reaction 2 A(s) = B(g) + 3 C(g), we begin with only pure A(s). We attain equilibrium. At equilibrium, the total pressure is 8.00 atm. What is the value of AG for this reaction? The temperature is 25.0 °C throughout.arrow_forward
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